Sierra Wireless AirLink GL8200, User Manual

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4116298 Rev 7.0 November 07, 2016 33
Product Technical Specification and
User Guide
Troubleshooting the GL8200
5.2.
Receiving an “ERROR” Message
The GL8200 returns an
"ERROR"
message (in reply to an AT command) in the following cases:

The AT command syntax is incorrect. In this case, check the command syntax applicable to
the HL8548x as specified in document [2] AirPrime HL6 and HL8 Series AT Commands
Interface Guide.

The AT command syntax is correct, but was transmitted using the wrong parameters:

Enter the
AT+CMEE=1
command in order to change the error report method to the
verbose method, which includes the error codes.

Re-enter the AT command which previously caused the reception of an
"ERROR"
message in order to get the Mobile Equipment error code.
When the verbose error report method is enabled, the response of the GL8200 in case of error is
either:

+CME ERROR: <error result code>
or

+CMS ERROR: <error result code>
For more information on error result code description and further details on the
AT+CMEE
command
that are applicable to the GL8200, please refer to the commands marked as supported by HL8548x in
document [2] AirPrime HL6 and HL8 Series AT Commands Interface Guide.
Tip: It is strongly recommended to always enable the verbose error report method to get the Mobile
Equipment error code (enter the
AT+CMEE=1
command).
5.3.
Receiving a “NO CARRIER” Message
If the GL8200 returns a
"NO CARRIER"
message upon an attempted call (voice or data), refer to the
table below for possible causes and their corresponding solutions.
Table 17.
Solutions for Receiving a “NO CARRIER” Message
If the GL8200
returns
Then ask Action
“NO CARRIER”
Is the received signal strong
enough?
Refer to section 4.3 Verify the Received Signal
Strength to verify the strength of the received
signal.
Is the GL8200 registered on the
network? Refer to section 4.4 Verify the Network
Registration to verify the network registration.
Is the antenna properly connected?
Refer to section 2.2.2.3 Antenna Specifications
for antenna requirements.
"NO CARRIER" (when
trying to issue a voice
communication) Is the semicolon (;) entered
immediately after the phone number
in the AT command?
Ensure that the semicolon (;) is entered
immediately after the phone number in the AT
command.
e.g.
ATD######;